syzbot

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BUG: KASAN: wild-memory-access in instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
BUG: KASAN: wild-memory-access in test_and_set_bit include/asm-generic/bitops/instrumented-atomic.h:71 [inline]
BUG: KASAN: wild-memory-access in __fscache_relinquish_cookie+0x2c/0x580 fs/netfs/fscache_cookie.c:977
Write of size 8 at addr adacafaea9a8ac9a by task syz-executor422/7753

CPU: 0 PID: 7753 Comm: syz-executor422 Not tainted 6.8.0-rc4-next-20240214-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 print_report+0xe8/0x550 mm/kasan/report.c:491
 kasan_report+0x143/0x180 mm/kasan/report.c:601
 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189
 instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
 test_and_set_bit include/asm-generic/bitops/instrumented-atomic.h:71 [inline]
 __fscache_relinquish_cookie+0x2c/0x580 fs/netfs/fscache_cookie.c:977
 fscache_relinquish_cookie include/linux/fscache.h:308 [inline]
 v9fs_evict_inode+0x100/0x180 fs/9p/vfs_inode.c:356
 evict+0x2a8/0x630 fs/inode.c:666
 v9fs_fid_iget_dotl+0x1bf/0x210 fs/9p/vfs_inode_dotl.c:96
 v9fs_get_inode_from_fid fs/9p/v9fs.h:230 [inline]
 v9fs_mount+0x7f9/0xa90 fs/9p/vfs_super.c:142
 legacy_get_tree+0xee/0x190 fs/fs_context.c:662
 vfs_get_tree+0x90/0x2a0 fs/super.c:1784
 do_new_mount+0x2be/0xb40 fs/namespace.c:3352
 do_mount fs/namespace.c:3692 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f542cfe7ea9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffffaac1428 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f542d03103b RCX: 00007f542cfe7ea9
RDX: 00000000200001c0 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00000000000f4240 R08: 0000000020000300 R09: 00000000000000a0
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000001803f
R13: 00007ffffaac143c R14: 00007ffffaac1450 R15: 00007ffffaac1440
 </TASK>
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